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(No Model.) 2 SheetsSheet 1. J. AUSTIN & R.. CHAMBERLAIN.

GATE. No. 331,673. Patented Dec. 1, 1885.

WITNESSES I r. R- i W I W ATTORNEYS.

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(No Model.) 2 SheetsSheet 2/ J. AUSTIN & R. CHAMBERLAIN.

GATE.

No. 331,673. Patented Den. 1, 1885.

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' BY M g MA M ATTQRNEYS.

UNITED STATES PATENT @rricn.

JOSIAH AUSTIN AND ROSSOO CHAMBERLAIN, OF EAST LIBERTY, OHIO.

GATE.

SPECIFICATION forming part of Letters Patent No. 331,673, dated December1, 1885.

Application filed December 23, 1884. Serial No. 151,029. (No model.)

To aZZ whom it may concern.-

Be it known that we, J OSIAH AUsrIN and Rossco CHAMBERLAIN, of EastLiberty, in the county of Logan and State of Ohio, have invented a newand useful Improvement in Gates, of which the following is a full,clear, and exact description, reference being had to the annexeddrawings, forming part of this specification.

This invention relates to automatic double gates; and it consists ofcertain improvements on the gates shown in Letters Patent No. 251,498,granted to us under date of December 27, 1881, No. 272,619. granted tous under date of February 20, 1883, and No. 299,451, granted to us underdate of May 27, 1884:.

In the drawings, Figure l is an elevation of our improved double gate,partly in section; and Figs. 2, 8, and 4 are detail views.

A indicates the two gates, and B are the posts by which they aresupported. Underneath the roadway is arranged a rock-shaft, O, which isjournaled in bearings D, attached to the posts. The bearingD is madeLshaped and is so arranged that one of its arms shall extend out fromits post to form a bearing for the lower part of the hinge-rod E. On thelower end of said rod E, below its bearing, is secured a bevel segmentalpinion, F, which meshes with a bevel segmental gear, G, which is securedto the rock-shaft 0.

Instead of forming thesegmental pinion and gear with regular teeth, asshown in our Patout No. 272,619, we form the central part of the gearwith a plane surface, H, and the central part of the pinion with atoothless portion, I, which shall bear against said plane surface IIwhen the gate is closed. The said plane surface thus serves to lock thepinion until the segmental gearis moved by the push rod J sufficientlyto bring the tooth Kinto engagement with the teeth L H of the pinion,when the further movement of the gear will cause the pinion to turn andmove the hingerod E, causing the gate to swing open.

A roller, N, is supported underneath the projecting arm of the L-shapedbearing D in position for bearing against the outer or back surface ofthe gear G, for supporting the latter at the upper end. The arm of thebearing D, which supports the hinge-rod E, is intended to be made broad,so as to cover the pinion F and gear G, and form a housing for the same.

In order to provide for unlatching the gate in the act of opening it,the upper end of the hinge-rod E is formed with a crank, O, to which theupper end of the gate is attached, so that as the hinge-rod begins toturn the crank will slightly lift the free end of the gate and lift thelatch P out of the keeper The keeper Q is formed with four levers, It,independently pivoted in a support, S, and an ranged in pairs. Each pairis provided with a retaining spiral spring, T, which forces their endstoutward and their ends 8 inward against anintermediate stop, 0. The twopairs of levers are arranged with their ends 25 toward each other, sothat the gates when opened either way and then closed will be promptlystopped in closed position.

U indicates an inclined serrated catch sup ported on a post, V, inposition for catching the gate by one of its bars X, when opened. Thebar X is provided with a corresponding serrated plate, Y, secured to itslower edge and inclined upward at its ends from its cen ter, so as to beoperative when the gate is opened either way, there being two catches,U, for each gate. Theinclination of the catch U is such that the freeend of the gate will be lifted as it moves on the catch, and thus itsmomentum will be gradually checked. The act of closing the gate willlift it out of contact with the catch U.

lVhile the hinge and the keeper Q are especially adapted to theautomatic operation of the gate, yet as it is frequently necessary toopen the gate by hand by raising the latch 1 without lifting the gate,it is found essential that the crank-rod Eshould remain stationary atsuch times. It is further necessary to the successful operation ofacrank-hinge gate that while the gate may be operated by a slide-bar, G,yet the gate should not be able to start from its normal or closedposition and operate the said slide-bar. This is the especial reason forgiving the segmental form M I M to the pinion F and intermediate blank,H, in the rack on the slide-bar G. The blank H resist-s motion of bothteeth M and holds the pinion still while the gate is opened by hand, asstated, and it holds the pinion still in case anything leaning againstthe top of the gate gave the crank O a tendency to move. The keeper Q,stands across the center of the plane of the gates, and either of thedetents R on'one side of it may be sprung in to admit the gate betweenthem as the gate is closed one way or the other; but these detents arenot provided with any other means to move them, so that the gate cannotbe opened automatically Without some means of lifting the latch P. Thismeans I-provide in the cranked hinge, which lifts the gate bodily. It isespecially neces-' sary that a gate opened mechanically by beingpermitted to swing down at incline, as this does, should be providedwith means for gradally overcoming the momentum acquired. To this end Ihave provided the inclined serrated catches Y U. The gate must be liftedto disengage these catches, and this again is accomplished by thelifting-crank 0.

What we claim is 1. The combination, with a gate and post, of thehinge-rod E, journaled vertically in brackets secured to the post andprovided with the crank O at its upper end, the said gate being hingedat its upper edge upon the said crank and at its lower edge upon the rodof the crank, a pinion, F, secured on the lower end of the crank and.provided with teeth M L at each side of the plane of the gate callyjournaled on thepost, thegateA,hinged upon said rod and crank, the latchP on the gate, the keeper Q, secured on the ground heneath the edge ofthe gate and provided with the stops 7, and the stops B, pivoted to thekeeper Q in the path of the latch P, and provided with projections s andthe springs T, substantially as shown and described. I

3. The combination of the gate A, the

cranked hingerod E therefor, the serrated plate Y, secured to the gateand inclined upward each way from the center, and the serrated catch Uand post V, substantially as shown and described.

JOSIAH AUSTIN.

ROSSOO CHAMBERLAIN. Witnesses:

ELIAS ORUMRINE, JANE MoRmsoN.

